Author: Brett Clark
Date: 17:15:50 06/26/99
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On June 26, 1999 at 04:58:42, Terry Ripple wrote: >When you go to Levels and then Engine Research, then click on System >Configuration you will then see the Optimum Hash Size at(200mhz) for the time >control you have set.This changes for each time control setting! Is this fairly >accurate or should i be using another formula? Was this for Fritz instead? > >I have a AMD K6-2, 266mhz MMX with 64RAM. The Hi-Mark short test don`t seem to >be very accurate because if you set it for just 1 or 2MB, this will give you the >highest Hi-Mark and KN/S for any time control setting!!! I`am confused! > >Thankyou in advance for any help you can share! >Best regards, >Terry Terry, the formula for Fritz will work for Hiarcs; however you need to substitute KN/S for PFreq. Run a test to find out how many KN/S Hiarcs generates on your machine (we'll call this value "n"). Once you determine the number, use the formula HT[KB] = 2.0 * n[KN/s] * t[s] (where t[s] = average time per move in seconds). For example, on my Pentium 200, Hiarcs 7.32 runs at about 15 KN/S. For a 40/2 match (average of 1 move per 180 seconds), the appropriate hash table size is: 2.0 * 15 * 180 = 5400 KB, or 5.4 MB Fritz 5.32 runs at about 160 KN/S on my machine, so for the same time control, the hash table size is: 2.0 * 160 * 180 = 57600 KB, or 57.6 MB I've found that this works for all of the engines under the Fritz interface. You just need to find out how many KN/S the engine is generating, then plug it into the formula. Hope this helps.
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